Nurling-machine.



L. A. GASGRAIN.

NURLING MACHINE.

APPLICATION FILED MAY 12, 1902.

Patented Apr. 14, 1914.

2 SHEETS-SHEET l.

I Luis (610 065 7 COLUMBIA Wm 60-, WASHINGTON. D. C.

L. A. OASGRAIN.

NURLING MACHINE.

APPLICATION FILED MAY 12, 1902.

Patented Apr. 14, 1914.

2 SHEETS-SHEET 2.

COLUMBIA PLANOGRAPH c0., WASHINGTON. D. c.

LOUIS A. CASGRAIN, OF WINCHESTER, MASSACHUSETTS, ASSIGNOR TO UNITED SHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A. CORPORATION OF NEW JERSEY.

NURLING-MACHINE.

oaasea.

Specification of Letters Patent.

Patented Apr. 14:, 1914.

Application filed May 12, 1902. Serial No. 107,031.

To all whom it may concern Be it known that I, LOUIS A. CAsonAIN, a citizen of the United States, residing at lVinchester, county of Middlesex, State of Massachusetts, have invented an Improvement in Nurling-Machines, of which the following description, in connection with the accompanying drawings, is a specification, like letters on the drawings representing like parts.

This invention relates to machines for use in the manufacture of boots and shoes and is herein described as embodied in a nurling machine; that is, a machine for forming a series of ornamental impressions upon leather or similar material.

The invention has among its objects to devise a machine designed especially to protect the work from injury, to reduce the wear of the operating. parts and particularly to provide a compact and efficient, machine for performing the nurling operation. To these ends and particularly with a view to protecting the work it is proposed to provide means to insure the proper engagement of the tool with the work before the tool or other parts coming in contact with the work are started into operation. This arrangement not only avoids the damage that might be caused by striking a rapidly moving tool in presenting the work thereto, but it also increases the life of the machine since it results in driving the more important parts of the machine only when the work is in position to be operated upon. It is further proposed to mount the tool so that it may be controlled in its operation to a certain extent by the work. This arrangement is designed particularly to enable the tool to-move with the work relatively to the driving means in case unusual resistance to the operation upon the work is encountered, thus protecting the work from the injury that otherwise would be sustained by positively driving the tool under such circumstances.

The particular manner in which the objects of the invention are effected will be clear from the following description, reference being made to the accompanying drawings, in which Figure l in side elevation represents a machine embodying my present invention; Fig. l is a plan view of the head detached; Fig. 2 is a vertical section taken through the stock support and the nurling roller and part of the movable head sustaining the shaft for actuating the nurling roller; Fig. 3 is a face view of the upper part of the machine shown in Fig. 1, looking at the same from the left, the stock support being omitted; Fig. 4 is a plan view of the part shown in Fig. 3; Fig. 5 is an enlarged plan view of the stock feeding device sustained by the stoclcsupport; Fig. 6 is a section in the dotted line in, Fig. 5; Fig. 7 represents a side and edge view of the nurling roller removed; and Fig. 8 represents stock, a portion of which has been operated upon by the nurling wheel.

The frame of the machine consists of a column a, having feet a to rest upon and be secured to the floor. The column has a forwardly extended bracket (1 and a rearwardly extended bracket a These brackets are shaped to constitute bearings for the driving shaft a of the machine, said shaft having secured to it at or near one end a fast pulley a and having loose on said shaft outside said fast pulley a pulley a. The pulleys have conical faces adapted to be clutched one with the other when the loose pulley, continuously driven in usual manner by a belt, is forced into engagement with the fast pulley by means of a lever (13 pivoted at a one arm of said lever being connected with a rod a attached to a treadle (4 pivoted on a stud (L12 held in a suitable upturned portion of one of the feet. WVhenever the outer end of the treadle a is depressed, a projection 2 of the lever a contacts with a sliding block 6, moves the same longitudinally of the shaft a and causes the block acting against one side of the loose pulley to force said pulley against the fast pulley a to start the machine, at the same time compressing a spring 5 located between said pulleys which acts to separate the pulleys to stop the machine whenever the foot is removed from the treadle a The forward end of the shaft a is provided with a bevel gear 5 that engages a bevel gear fast to the lower end of a sleeve 6* surrounding a post 6 clamped in the bracket a by means of clamp screws 6. The upper end of the post 6 is tapered, and receives upon it the split sleeve 6 of a carrier Z2 This sleeve may be clamped, if desired, on said post or any slackness between said sleeve and the post 6 may be taken up .shaft in the base.

by a clamping screw 1). A stud screw 5 extended through the upper end of the sleeve 6 and entering a threaded hole in the upper end of said post, confining the carrier in its working position. The upper end of the sleeve o is toothed at 6 to constitute a pinion that engages an intermediate pinion 0 sustained by a stud screw 0 depending from the carrier 6 said pinion c in turn engaging a toothed. gear 0 fast on the lower end of ashaft 0 extended upwardly through the base 0* of the stock-support held in a suitable cavity in said carrier. The lower end of the base 0 of the stock-support, see Fig. 2, is reduced in diameter and threaded, and the stock-support is secured in posit-ion by a nut 0 The lower end of the base is recessed to receive a collar 0 attached to the shaft 0 and preventing any upward movement of said The upper end of the shaft 0 is provided with teeth 0 that engage teeth a at the lower end of a shaft 0 extended through the upper end of the stocksupport and provided at its upper end with other teeth 0 that engage teeth 0, see Fig. 6, in the sleeve-like end of a stock-feeding wheel (Z that surrounds a boss cl extended upwardly from the stock-support, said stockfeeding wheel being revoluble about said boss by or through the shafts c and 0 The upper end of the stock-support is provided with a hardened steel ring (Z on which rests a series of balls d that enter an annular groove in the underside of the stockfeeding wheel, the wheel being seated on said balls by a stud screw (Z The face of the stockfeeding wheel is scored, as shown best in Fig. 5, and as said wheel is rotated in the direction of the arrow Fig. 5, it acts on the stock S, partially shown in Fig. 2, and aids in feeding the same over the horn. The upper end of the column is formed as a yoke and each arm of the yoke has a pivot e for a head 6 having bearings to sustain a shaft (2 in the plane of the pivots e. The shaft has a connected belt pulley e occupying a position between the arms of the yoke and in the same vertical plane with said pivots. The belt pulley e is embraced by a belt a that in turn surrounds a pulley 6 fast on the shaft (4 so that the shaft 0 is rotated from the shaft a. It will be seen that by arranging the pulley e in the same vertical plane with the pivot e and by locating the bearings of the head 6 in a horizontal plane with the pivot c any liability of the belt escaping from the pulleys e or e in the vertical movement of the head 0 is prevented. The forward end of the shaft 6 is made somewhat conical, see Fig. 2, to receive upon it the concaved face 3 of the nurling roller 6. The nurling roller has a central hole t through which is entered the boss of a friction washer 6 and said washer is acted shaft 6 The nurling roller 6 is thus held frictionally, and by turning the screw 6 the degree of friction may be changedaccording to the work to be done. This construction holds said roller firmly in connection with said shaft, so that the roller may aid in feeding the stock, but in case of unusual strain upon said roller, that might injure the stock, the roller is free to slip on the shaft 6 The forward end of the head 6 has attached to it, by screws f, a bearing block f that receives a headed shaft f threaded at its lower end and having ap plied to it a worm toothed gear f see Fig. 4c, and also a feed wheel f having a frictional surface 7. The feed wheel derives its movement from a worm f on the shaft'e which engages the worm toothed gear F. The wheel f by contacting with the edge of the stock, aids in feeding the same, and it also acts as an edge gage t0 positionthe edge of the stock with relation to the nurling roller. The nurling roller shown is provided with aseries of teeth or projections, substantially parallel with the longitudinal axis of the shaft 6 and said teeth, as shown,

are so located that the ends of adjacent teeth terminate at different'distances from the edge of the roller, said teeth under such conditions making a line of nurling h presenting a waved edge. If the ends of the teeth all terminated at the same distance from the edge of the roller, the side lines of the line of nu ling would obviously be substantially parallel.

Fig. 8 shows a piece of stock, a portion of which has been operated upon by the nurling wheel. In said figure f indicates the line of cuts which have been formed by the machine shown in United States Letters Patent No. 693,686 dated Feb. 18, 1902. Said lines of out are obliterated or concealed by the operation of the nurlingwheel, and it is for this use that the machine is especially intended. The nurling may, however, be done on the stock at any point as the nurling is ornamental and makes a shoe more attractive. The design embossed in the stock will correspond to the design worked on the surface of the roller, and this invention is not limited to any particular design for the surface of the roller, nor is the invention limited to applying the line of nurling or embossing in the particular position shown or for the particular object stated. To enable the nurling roller to be borne yieldingly against the stock to be nurled, I have provided a spring f that is sustained at its lower end by a nut f on a link f pivoted at f on the lever (67. The

upon by an auxilliary washer 6 preferably 1 spring f surrounds the link f and the upper end of said link is extended loosely through a hole in a stud g pivotally sustained in a bored ear 6 at the rear end of the head 6', and the upper end of the spring f acts against the underside of the said stud, suitable nuts g preventing the link f from being withdrawn from the hole in the stud g.

Whenever the treadle a is depressed by the operator, the upper end of the lever a is carried to the left, viewing Fig. 1, and the link f is moved longitudinally, causing the spring i to be borne against the stud g to turn the head about its fulcrum e, causing the nurling roller to be forced yieldingly against the face of the stock. This takes place during the first part of the movement of the treadle a, and during the latter part of that movement the clutch is operated and the machine is started. By this arrange ment the contact of the tool with the stock prior to the actuation of the tool is insured and the liability of marring the stock by bringing it into contact with a driven tool thus is avoided.

In operation the workman engages the shoe S by hand and holds the edge of the sole against the combined feed wheel and gage f maintaining and directing the sole in the proper line of movement as the nurling roller and the stock feeding device, contacting with the stock at its upper and lower sides, moves the stock during the nurling operation. The nurling operation having been completed, the workman removes his foot from the treadle a and immediately the spring it connected with said treadle and with the extension a lifts the treadle, turns the lever a away from the block b, and enables the spring Z) to separate the fast and loose pulleys and leave the shafts a and e at rest.

Having described my invention what I claim as new and desire to secure by Letters Patent is 1. In a nurling machine, a rotatable shaft, a head having bearings therefor, pivots for said head, said pivots being at right angles to said shaft and occupying a position in line with the longitudinal axis of said shaft, a pulley fast on said shaft and rotatable in a vertical plane intersecting the axis of said pivots, and a nurling roller at the end of said shaft and adapted to nurl the stock.

2. In a machine of the class described, a revoluble horn to enter and sustain a shoe, a movable head, a rotatable shaft sustained in said head, and a nurling roller, frictionally and movably held on said shaft.

3. In a machine of the class described, a movable head, a rotatable shaft having a worm and sustained in said head, a second shaft having a worm toothed gear engaging said worm and carrying a feeding wheel, and a nurling roller applied to one end of said first shaft, said first shaft rotating the nurling roller and the feeding wheel.

4. In a machine of the class described, a revoluble horn adapted to enter and. sustain a shoe, a shoe feeding wheel serrated at its upper side and carried on the upper end of the horn, means carried by said horn to rotate said feeding wheel, and a nurling roller to act on and nurl the face of the sole of the shoe sustained by said shoe feeding wheel.

5. In a machine of the class described, a revoluble horn adapted to enter and sustain a shoe, a shoe feeding wheel serrated at its upper side and carried on the upper end of the horn, means carried by said horn to rotate said feeding wheel, and a roller adapted to act on the edge of the sole, and means to rotate the latter roller.

6. In a machine of the class described, a revoluble horn adapted to enter and sustain a shoe, a shoe feeding wheel serrated at its upper side and carried on the upper end of the horn, means carried by said horn to rotate said feeding wheel, and a shaft carrying a nurling roller connected frictionally therewith, and means to rotate said shaft.

7. In a machine of the class described, a horn to enter and sustain the stock, a feed wheel mounted at the extremity of said horn, means to move said feed wheel positively that the latter in engagement with the stock may feed the same on the horn whatever the position thereof, a shaft having mounted upon it loosely a toothed roller to act on the face of the sole of a shoe, a wheel acting against the edge of the stock, and means to rotate said last mentioned wheel positively to aid in feeding the stock,

8. In a machine of the class described, a stock-support, a stock-feeding wheel carried thereby, means to rotate said feeding wheel to aid in feeding the stock, a movable head, a rotatable shaft in said head, a nurling roller applied to said shaft, means to rotate said shaft that the nurling roller may aid in feeding the stock, and a wheel acting against the edge of the stock and also aiding in feeding the same.

9. A nurling machine comprising a stocksupport, a head movable toward and from said stock-support, a rotatable shaft therein provided with a nurling roller to act upon and nurl the stock, a clutch mechanism for starting and stopping the machine, and a manually operated part for moving the roller into engagement with the stock and for thereafter operating the clutch to start the machine.

10. In a machine of the class described, the combination of a feed wheel arranged to act as an edge gage, a stock-support, a stock feeding wheel mounted in the upper end of the stock-support, and means for rotating each of said wheels the stock feeding wheel being rotated by devices located in part within the said stock support, substantially as described.

11. I11 a machine of the class described, a leather working tool, a stock support, said stock support and tool being relatively movable, a continuously operating member, connecting mechanism between said member and said tool arranged to be rendered operative to drive the tool or inoperative to interrupt the driving action, and mechanism operable to effect a relative movement of said stock support and tool to bring the tool and work into engagement with each other and thereafter to render said connecting mechanism operative to drive the tool.

12. A nurling machine, comprising a stock-support, a head movable toward and from said stock-support, a rotatable shaft therein provided with a nurling roller to act upon and nurl the stock, a stock feeding wheel, means for rotating said wheel and said shaft including a clutch mechanism for starting and stopping the machine, and a manually operated part for moving the roller into engagement with the stock and for thereafter operating the clutch to start the machine.

13. In a machine of the class described, a leather working tool constructed to have continuous engagement with the work during its operation, continuously operating means for actuating the tool, and means for insuring contact of the tool with the work prior to its actuation by said means.

14. In a machine of the class described, a

. leather working tool, a continuously operating member, connecting means between said member and said tool arranged to be rendered operative to drive the tool or inoperative to interrupt the driving action, and means for insuring contact of the tool with the work prior to the initiation of its operation through said connecting means.

15. In a machine of the class described, a leather working tool constructed to have continuous engagement with the work dur- Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents,

ing its operation, means for feeding the arranged to act as an edge gage, a tool arranged to act upon the exterior of the sole and to aid in feeding the work, and means for operating each of said parts. I 17. In a machine of the'class described, the combination of a stock feeding wheel constructed to enter the shoe, a feeding wheel arranged to act upon the sole edge, and a rotary nurling tool arranged to act upon the sole and to aid in feeding the work, together with operating means for said parts.

18. In a machine of the class described, a leather working tool mounted for movement into and out of engagement with the work and constructed to have continuous engagement with the work during its operation,

continuously driven means for operating the tool and means for insuring contact of the tool with the work prior to its actuation by said means.

19. In a machine of the class described, a rotary leather working tool constructed to have continuous engagement with the work during its operation, a continuously operat ing member, connecting means between said member and said tool arranged to be rendered operative to rotate said tool or inoperative to interrupt such rotation, and

means for insuring contact ofthe tool with the work prior to its rotation by said member and said connecting means.

In testimony whereof, I have signed my name to this specification, in the presence of two subscribing witnesses.

LOUIS A. OASGRAIN.

vVitnesses:

JOHN G. EDWARDS, EMILY G. Honors.

Washington, D. C. 

